Belt-cutting tool.



T. 1. HAYES.

BELT CUTTING TOOL.

APPLICATION FILED APR-5.1911.

1,23 1 ,02 1 Patented June 26. 1917.

THOMAS J. HAYES, OF BOSTON, MASSACHUSETTS.

BELT-CUTTING TOOL.

Specification of Letters Patent.

Patented June 26, 1.917.

Original application filed October 23, 1915, Serial No. 57,456. Divided and this application filed April 5,

b all whom it may concern:

Be it known that I, THOMAS J. HAYES, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Belt Cutting Tools, of which the following is a specification.

This invention relates to tools for cutting off the ends of round leather belting to form square ends adapted to be abutted together, for punching the belting near said ends to form holes for the reception of the legs of a staple-shaped wire-coupling, and for clenching the legs of the coupling upon adjacent ends of the belting. A tool of this character in common use comprises a pair of body members having opposed faces between which the belting is grasped, and crossed levers fulcrumed together between the said members, and so connected with the members that the faces thereof are moved toward and from each other by the levers and are maintained in parallelism with each other, one of the members being provided with a perforating punch and with a cutter projecting inwardly from the member and cotiperating with a shearing edge at one end of av beltreceiving recess inthe other member in cutting off the end of a length of belting interposed between the members, the members being provided with extensions formed to cooperate in clenching the belt coupling.

My Patent, 1,179,830, dated April 18, 191-6, discloses certain improvements relating to the cutting and punching devices of a tool of the character above mentioned. In another application filed by me October 9, 1916, Serial No. 12 L465, of which this application is a division, I have shown certain improvements relating to the punching devices, and other improvements relating to the cutting devices. The last-mentioned improvements hereinafter described and claimed, form the subject-matter of this application.

Of the accompanying drawings forming a part of this specification,

Figure 1 is a side elevation of a tool embodying my invention, the body members eing open.

Fig. 2 is a similar elevation, the body members being closed.

Fig. 3 is a section on line 3*?) of Fig. 2.

Fig. 4 is a fragmentary perspective view showing a portion of one of the members.

Fig, 5 is a section on line 5--5 of 2.

Serial No. 159,911.

The same reference characters indicate the same parts in all of the figures.

In the drawings,-12 and 1.3 represent the body members of a belt-cutting and punchlng too], said members being termed for convenience of description the lower and upper member, respectively, although it is obvious that the tool may be usedwith either mem ber uppermost. 14 and 15 represent crossed levers fulcrumed together at 16 between the body members, each lever having a longer and a shorter arm. The shorter arms of the levers are connected with the members by pivot-studs 17, located in sockets in the members formed to closely fit the studs. The longer arms of the levers are engaged with the members by studs 18, located in longitudinal slots 19 in the members, the arrangement being such that when the levers are moved from the position shown by Fig. 1 to that shown by Fig. 2, the members are closed and are constantly maintained parallel with each other. The members are provided with coupling-clenching extensions 12- and 13 adjacent to the punch.

The construction thus far described is well known and is not claimed by me, this embodiment of my invention relating to the improvements neXt described in the cutting means.

The member 13 is provided with a belt-receiving recess21 opening toward the inner end of the member,a flat recessed side 22 intersecting the wall of said recess to form a shearing edge, and opposed parallel knifeguiding shoulders 23 projecting from said recessed face.

24 represents an elongated knife rigidly attached at one end to the member 12 by screws 25 and extending from the member 12 onto the recessed face 22 of the member 13. The knife has a cutting edge 26 preferably curved, as shown by Figs. 1 and 2, and adapted to cooperate with the above-described shearing edge on. the member 18. The flat inner side of the knife is in sliding contact with the recessed face 22, and the parallel longitudinal edges of the knife are in sliding contact with the shoulders 23. The flat outer side of the knife is in sliding contact with one of the shorter arms of the lever 15, as best shown by Fig. 5.

maintained in sliding contact with the shoul-,

ders 23 so that .edgewise displacement of the portion of the knife that projects over the member 13 is impossible. It will be seen, therefore, that the described construction provides cutting means of a very simple and durable character. I

When the members are opened the screws 25 are exposed, so that the knife can be readily attached and detached, the knife being slidable longitudinally between the re.- cessed face 22 and the lever arm 15. To facilitate the insertion of the knife and prevent liability of the operators fingers being cut by the cutting edge while inserting the knife, I provide the latter with an orifice 28 adapted to receive a pin whereby pressure may be exerted to move the knife to place.

It will be seen that the face 22 and shoulders 23 constitute a three-faced knife guide, one face of which intersects the wall of the belt-receiving recess 21 to form a shearing edge, and that the shorter arm of the lever 15 constitutes a fourth side of the knife guide, so that the portion of the knife between its inner end and cutting edge is entirely surrounded by guide members in sliding contact with its sides and longitudinal edges.

The sliding engagement of the outer end portion of the knife with the face 22 and shoulders 23 of the member 13, and with the lever 15, and the rigid attachment of the inner end portion of the knife with the member 12, maintain the members in exact alinement with each other and prevent either member from being deflected laterally from its path of movement.

I desire to call especial attention to the fact that the shoulder 23, which is the upper shoulder as shown in the drawings, spaced from the inner end of the recess 21, so that the face 22 has an extension 22 crossing the inner end of the recess, as shown in Fig. A portion of the inner side of the knife bears on the extension 22 and overlaps the inner end of the recess when the knife is moving forward, so that the cutting edge can not by any possibility be deflected to contact injuriously with the shearing edge of the member 13,

I claim:

1. A tool of the character stated, compris- 05 m; pfthis patent may be obtained for five cents each, by addressing the Commissioner of Patents.

ing an upper and a lower body member, the upper member having a belt-receiving recess opening toward the inner end of the member, and a flat recessed side face intersecting the wall of said recess to form a shearing edge, said member being provided with opposed parallel knife-guiding shoulders projecting from said recessed face, a knife rigidly attached at one end to the lower member and having parallel longitudinal edges in sliding contact with said shoulders, a cutting edge at one end, and flat inner and outer sides, the inner side being in sliding contact with said recessed face and the cutting edge being adapted to cooperate with said shearing edge, and operating means maintaining the members parallel, said means including a lever in sliding contact with the outer side of the knife, and confining the latter against the said recessed side face.

2. A tool of the character stated, comprising a pair of body members, one having a three-faced knife guide and a belt-receiving recess, a portion of which intersects one face.

of said guide to form a shearing edge, an elongated knife rigidly attached to the other member and projecting therefrom to cooperate with said shearing edge, the inner side and longitudinal edges of said knife being in sliding contact with the three faces of said guide, and operating means maintaining the members parallel and including a part bearing on the outer side of the knife and forming the fourth face of a guide which entirely surrounds a portion of the knife,

3, A tool of the character stated, compris ing a pair of body members, one having a belt-receiving recess and a recessed face extended across the inner end of said recess and intersecting a wall of the same to form a shearing edge, said member having also knife-guiding shoulder extending lengthwise of said face and spaced fro-m the inner end of the recess, a knife rigidly attached to the other member, and operating means maintaining the members parallel, means being provided for confining the knife in sliding contact with said face and shoulder, so that the inner side of the knife overlaps the inner end of the recess, and is prevented from contacting injuriously with said shearing edge.

In testimony whereof I have affixed my signature.

THOMAS J. HAYES.

Washington, D. c. 

